9x + 2 = 10x +7

solve for x​

To find the mean and mean absolute deviation of a data set, you need to follow these steps:

1. Find the mean: To find the mean of a data set, add up all of the values in the set and then divide that sum by the number of values in the set. For example, if your data set is {2, 4, 6, 8, 10}, you would add up all of the values (2+4+6+8+10=30) and then divide that sum by the number of values (5). So the mean of this data set is 30/5 = 6.

2. Find the mean absolute deviation:

To find the mean absolute deviation of a data set, you first need to find the absolute deviation of each value in the set from the mean.

To do this, subtract the mean from each value in the set (for example, if your data set is {2, 4, 6, 8, 10} and the mean is 6, you would subtract 6 from each value: 2-6=-4, 4-6=-2, 6-6=0, 8-6=2, 10-6=4).

Then, take the absolute value of each of these differences (|-4|=4, |-2|=2, |0|=0, |2|=2, |4|=4). Finally, find the mean of these absolute deviations by adding them up and dividing by the number of values in the set.

For the example data set above, the mean absolute deviation is (4+2+0+2+4)/5 = 2.4.

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We need to find the time period in years and days which Joel took to repay the loan.

Given the principal is 8,450, rate of interest is 6.5% per annum, and the interest charged is 360.

Let's solve the problem.

Find the time period using the formula Simple Interest\(= (P × R × T) / 100\)

Here,P = 8,450R = 6.5%T = ?Simple Interest = $360

Substituting the values in the formula and solving for T.

we get: \(360 = (8,450 × 6.5 × T) / 10036000/552.25 = T = 65.228 Years 65 years and 0.228 × 365\) days = 83 days.

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Answer:

(x-3)²-14

Step-by-step explanation:

Complete the square of the following quadratic equation.

x²-6x-5

\(\hrulefill\)

To complete the square for a quadratic equation in the form of ax²+bx+c =0, where a, b, and c are constants, you can follow these steps:

\(\hrulefill\)

Step (1):

x²-6x-5=0

=> (1)x²-6x-5=0

a=1, so we can proceed

Step (2):

x²-6x=5

Step (3):

b=-6

=>1/2b=-3

=> (-3)²=9

Step (4):

x²-6x+9=5+9

Step (5):

(x-3)²=5+9

Step (6 & 7):

(x-3)²=14

We can rewrite this to get it in the form for your question.

(x-3)²=14

=> (x-3)²-14

Thus, the blanks are 3 and 14.

Answer:

It's quite easy

Step-by-step explanation:

people less than 30 years = frequency of people 0 to 15 + 15 to 30 = 8+15 =23

Therefore there are 23 people less than 30 years old.

pls mark me as brainliest pls.

Answer:

6 units left 5 units right

Step-by-step explanation:

Using division, the length of the sandwich each friends got was 1.02083ft

Division is a mathematical operation that divides one number (the dividend) by another (the divisor) to find the answer (the quotient). It is one of the four basic operations in mathematics, along with addition, subtraction, and multiplication.

To determine the size each one got, we have to divide the total length of the sandwich by the number of friends.

We need to convert the mixed fraction into improper fraction or decimal

6 1/8 = 49/8 = 6.125

Now, let's divide this by 6

6.125 / 6 = 49/48 = 1.02083

The length each of her friends will get is 1.02083ft

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Answer:

it's -7

Step-by-step explanation:

answer answer is -7

Answer: 4/3

Step-by-step explanation:

To solve the equation 15a + 18 = 38, we need to isolate the variable "a" on one side of the equation.

First, we can subtract 18 from both sides of the equation to get: 15a = 20

Then, we can divide both sides of the equation by 15 to solve for a: a = 4/3

So, the solution to the equation 15a + 18 = 38 is a = 4/3.

Answer:

2.1

Step-by-step explanation:

By the Law of Cosines,

a² = 5² + 6² - 2(5)(6)cos(20°)

a = sqrt(5² + 6² - 2(5)(6)cos(20°)), which is about 2.1

Step-by-step explanation:

Here is the solution...hope it helps:)

Answer:

see below

Step-by-step explanation:

area of a cylinder = top circle + bottom circle + lateral

r=4 h=5

lateral = perimeter of the circle * height = 2π*4 * 5 =40π

area of a circle = πr² = 16π

top & bottom =32π

total = 40π+32π =72π = 226.08

The surface area of a cylinder exists 72π square units.

A cylinder's surface area is equal to two times the sum of its side and base areas.

Let the equation be

Surface area = 2(base area) + (side area)

The Base area of the equation be

Base area = πr²

When r = 4,

substitute the values in the above equation, we get

Base area = π(4)²

simplifying the equation, we get

Base area = 16 π

side area = 2πrh

side area = 2π × 4 × 5

side area = 40π

The Surface area of the equation be

Surface area = 2(base area) + (side area)

substitute the values in the above equation, we get

surface area = 2 × (16 π) + 40π

simplifying the equation, we get

surface area = 32π + 40π

surface area = 72π

Therefore, the surface area exists 72π square units.

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Answer:

Letter C cuz its right i hope it help wait dont foorget to punch your pc

Answer:

where is the picture?

Step-by-step explanation:

Answer:

...

Step-by-step explanation:

Answer:

12 x -6 is -72 and -6 + 12 is 6 so 12 and -6 is the answer

Step-by-step explanation:

Answer:

Step-by-step explanation:

Equations to check:

The 2 numbers that add up to 6, but multiply to -72 are - 6 and 12.

Brainliest please.

Answer:

x = 10

Step-by-step explanation:

y = - 8 is a horizontal line parallel to the x- axis

A line perpendicular to it will therefore be a vertical line parallel to the y- axis with equation

x = c ( c is the value of the x- coordinates the line passes through )

the line passes through (10, - 20 ) with x- coordinate 10 , then

x = 10 ← equation of perpendicular line

Answer:

It looks like you are trying to find the retail price for a given quantity of pairs. To write an equation that could be used to find the retail price for each range of quantities, you will need to know the following information:

The retail price for the first range (0-20 pairs)

The retail price for the second range (21-40 pairs)

The retail price for the third range (41-60 pairs)

The retail price for the fourth range (61-80 pairs)

The retail price for the fifth range (81 or more pairs)

Once you have this information, you can use an if-then statement to create an equation that will work consistently for each range. The equation might look something like this:

if (quantity >= 0 and quantity <= 20):

retail_price = price for 0-20 pairs

elif (quantity >= 21 and quantity <= 40):

retail_price = price for 21-40 pairs

elif (quantity >= 41 and quantity <= 60):

retail_price = price for 41-60 pairs

elif (quantity >= 61 and quantity <= 80):

retail_price = price for 61-80 pairs

else:

retail_price = price for 81 or more pairs

This equation will work consistently for each range because it uses a series of conditions to determine which retail price to use based on the quantity of pairs.

EDIT:

To find the retail price for a given quantity of pairs based on the wholesale prices you provided, you can use the following equation:

if (quantity >= 0 and quantity <= 20):

retail_price = 25.00

elif (quantity >= 21 and quantity <= 40):

retail_price = 23.00

elif (quantity >= 41 and quantity <= 60):

retail_price = 21.00

elif (quantity >= 61 and quantity <= 80):

retail_price = 19.00

else:

retail_price = 17.00

This equation will work consistently for each range because it uses a series of conditions to determine the retail price based on the quantity of pairs. The retail price will be 25.00 for quantities in the first range (0-20 pairs), 23.00 for quantities in the second range (21-40 pairs), 21.00 for quantities in the third range (41-60 pairs), 19.00 for quantities in the fourth range (61-80 pairs), and 17.00 for quantities in the fifth range (81 or more pairs).

Step-by-step explanation:

Answer:

\((7x+10)^2-140x\)

Step-by-step explanation:

  \((7x+10)^2-140x\)

= \((7x+10)(7x+10)-140x\)

= \(49x^{2} +70x + 70x + 100 - 140x\)

= \(49x^2 +140x - 140x +100\)

= \(49x^2+100\)

Answer:

2.7

Step-by-step explanation:

65/24

Answer:

4.5%

Step-by-step explanation:

24*60 to make the hrs into minutes

24*60=1440

65/1440= 4.51388888889

round the number

4.5%

Answer: 7 classes enrolled in

Step-by-step explanation:

200+40n=480

40n = 280

n = 7

A floor cannot be tiled using only regular pentagons.

A floor cannot be tiled using only regular pentagons. For a regular hexagon, the measure of each vertex angle is 120°, which means that 3 regular hexagons fit to form 360°, and the plane can be filled. However, for a regular pentagon, the measure of each vertex angle is 108°, so regular pentagons cannot be placed together to fill the plane because the measure of the plane, 360°, is not divisible by the measure of each vertex angle. Therefore, a floor cannot be tiled using only regular pentagons.

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Answer:

Cube root of 16​

Step-by-step explanation:

x^m/n =n/x^m

4^2/3 = 3/4^2=3/16

So it is Cube root of 16​

Hope This Helped

The work done in hauling the bucket to the top of the well is 16ft/lb.

Using Riemann sum to calculate the area underneath a graph or curve.

At a rate of 0.15 lb/s, water escapes from a hole in the bucket. Convert this rate to inches per foot.

Q = 0.15 ÷ 1.5

Q = 0.01

As an outcome, water escapes at a rate of 0.01 lb/ft via a hole in the bucket.

Let x be the height in feet above the well's bottom. Thus, the total amount of water that leaks out of the hole is 0.01x The bucket is originally filled with 44 lb of water, and then 0.01x water seeps out. As a result, the water left in the bucket is,

44 - 0.01x

The bucket weighs 5 pounds. As a result, the total weight of the bucket when it reaches the top of the well is,

(44 - 0.01x) + 5

Because the well is 60 feet deep. As a result, the integration should be limited to a range of 0 to 60 feet. Take the above x function and solve it using the Riemann sum method.

W = \(\int\limits^{60}_{0} {44 - 0.01x + 5} \, dx\)

W = | 0 - 0.01 (x² ÷ 2) + 0|\({{}_{0}^{60}}\)

W = 0.005(60)² - 0

W = 16 ft/lb

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Answer:

29

Step-by-step explanation:

Given

- 5x + 4 ← substitute x = - 5 into the expression

= - 5(- 5) + 4 = 25 + 4 = 29

Answer:

No

Step-by-step explanation:

The fact that each sit-up is harder to complete as Anna grows fatigued suggests that there isn't a straight correlation between the number of sit-ups and the amount of time needed to complete them. There will likely be a nonlinear relationship between the number of sit-ups and the time it takes to complete them as Anna becomes more exhausted since the time it takes her to do each sit-up will likely grow at an increasing pace.

In general, two variables are only considered to be proportional when their changes are made in direct proportion to one another, or when their ratio does not change. However, in this instance, when the quantity of sit-ups increases, it takes longer to complete each one.

Answer:

Step-by-step explanation:

z -  any integer

2z+1 - any odd integer (the smaller one)

2z+1+2 = 2z+3 - odd integer consecutive to 2z+1  (the larger one)

2(2z+1)    - twice the smaller number

2(2z+1) - 1    - one less than twice the smaller number

2(2z+1) - 1 = 2z + 3

4z + 2 - 1 = 2z + 3

2z = 2

 z = 1

2z+3 = 2•1+3 = 5

check:

2z+1 = 2•1+1 = 3,  

2(2z+1)-1 = 2(2•1+1)-1 = 2•3-1 = 5 = 2z+3

Answer: 480 are teenagers

Step-by-step explanation:

To find a percentage of a number, I like to convert the percentage into its decimal form, so I do...

10% = .1 because a percentage is out of a whole number. 100% = 1.

Next, multiply your sum by the percentage you are looking for, so...

\(4800*.1=480\)

Plot G(-4,8), U(0,-9), and M(3,-7) on the coordinate plane.

Sure, here's the plot of the points G (-4,8), U (0,-9), M (3,-7) on the coordinate plane:

           |

           |

           |       M(3,-7)

           |

           |

           |

           |

_____ |______________

           |

           |

           |

           |   U(0,-9)

           |

           |

           |

           |

           |

           |

           |

           |   G(-4,8)

Note that the x-axis is horizontal and the y-axis is vertical. The point G is located 4 units to the left of the origin and 8 units above the x-axis. The point U is located at the origin and 9 units below the x-axis.

The point M is located 3 units to the right of the origin and 7 units below the x-axis.

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